Effective methods to improve processing accuracy

Original error reduction measures: providing tips on tools, measuring tools and fixtures themselves, controlling internal stresses in the process system, tool wear, thermal deformation, forces, etc., directly reduce original errors. Measurement errors and deformations of the machine can improve the geometric accuracy of the machine tool on which the part is machined. In order to improve the machining accuracy, first of all, the original error of the machining error should be analysed; then, different solutions should be taken according to the machining error of the situation. For precision machining of parts, machine stiffness, geometrical accuracy and heat deformation treatment control should be provided as far as possible. For surface forming machined parts, this is achieved primarily by reducing tool installation errors and forming tool shape errors.

      Compensation for errors: The original error of the process system can be compensated for using compensation methods and offset methods to compensate for errors. The compensation method involves artificially generating new original errors to counteract and compensate for the original errors inherent in the process system, thereby reducing processing errors and promoting processing accuracy. Offset methods are original errors that are fully or partially offset by original errors to reduce processing errors and improve processing accuracy. When designing part drawings, it is important to ensure that they are as simple and intuitive as possible to avoid the problem of inconsistencies between part labelling and actual part degrees. Although small, the role of the part components is very huge and has a very important significance in the actual production and processing. When manufacturing machinery, focus on the research of the parts, analyse the problems that exist for the design of the parts and propose corresponding countermeasures to solve them.

     Differentiation and homogenisation of errors: Improving the accuracy of the differentiation and homogenisation of errors for machining can be achieved using differentiation and homogenisation methods. The differentiation method is to classify the upper or blank process size according to the laws reflected in the error and to find the error range accurately, thus greatly reducing the error range in the size of the workpiece as a whole. The homogenisation method is the process of continuously averaging and reducing the original error on the surface of the workpiece through the machining method. Closely related tool or workpiece surfaces are inspected and compared to find discrepancies, and then, benchmarks or mutual modifications are processed.
  
      Transfer of errors: Error transfer can be sent to a direction that is not sensitive or to aspects that do not affect the processing accuracy. The degree of machining error is directly related to the error in the sensitive direction. During machining, specific measures can be taken in order to transfer machining errors to the insensitive direction, i.e. the tangential direction of the machined surface, to greatly improve machining accuracy. Large machine beams are poor, deformed and twisted by gravity and prone to machining errors. To eliminate such errors, beams for gravity bearings can be added to the structure of the machine tool to withstand the gravity of the beam itself and improve machining accuracy. Certain errors are unavoidable during machining and only by carefully analysing the causes of errors according to specific conditions can machining accuracy be improved in the desired way so that parts are handled incorrectly. Controlled within permissible limits to ensure the quality of the parts machined.

     Now as for the rapid development of science and technology, the requirements for the machining accuracy of components are also increasing, advanced science and technology should be actively used to improve machining. The design requirements for the entire process system, as far as possible to reduce the impact on the process of processing, to ensure that the processing quality and processing level of overall improvement.